He might have ditched the Purrari, but Deadmau5 is still finding ways to make into the news.

According to a tweet sent out by the Toronto-based EDM star, he and Disney have gotten into a legal battle over mouse ears. Deadmau5, whose real name is Joel Zimmerman, filed an application with the United States Trademark and Patent Office to trademark his signature mau5head logo. The house that Mickey built responded with 171-page document disputing the claim.

The mau5head is currently trademarked in over 30 counties.

After sending his lawyer to deal with Disney, Zimmerman decided to take matters into his own hands yesterday with a tweet that shows the cease and desist letter he and his lawyer sent to Disney. The letter accuses Disney of using his 2008 song “Ghosts ‘n’ Stuff” without permission in one of its videos. [via Time]

The full letter can be seen here. The original video for “Ghosts ‘n’ Stuff” can be seen below.